By Olesya Astakhova, Ahmad Ghaddar and Alex Lawler LONDON/MOSCOW (Reuters) -OPEC+ will raise oil output from November by 137,000 barrels per day (bpd), it said on Sunday, opting for the same fairly modest monthly increase as in October amid persistent worries over a looming supply glut. The group comprising the Organization of the Petroleum Exporting Countries plus Russia and some smaller producers has increased its oil output targets by more than 2.7 million bpd this year, equating to about 2.5% of glob ...